The Patek Philippe Grandmaster Chime features a manually wound Caliber 300 GS AL 36‑750 QIS FUS IRM movement in a double-faced, reversible design. This exquisite timepiece boasts a grande and petite sonnerie, a minute repeater with classic gongs, and a complex array of complications, including an instantaneous perpetual calendar, dual time zones, and moon phases. The time side presents a brown opaline dial with gold-applied Breguet numerals and a hand-guilloched hobnail pattern, while the calendar side is also brown opaline. Encased in a hand-guilloched white and rose gold case with a diameter of 47.7 mm and a height of 16.07 mm, it is paired with a patinated dark chestnut alligator leather strap and a white and rose gold fold-over clasp.